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Propagate cr# from COND_BRANCH to the actual branch instruction as appropriate

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23111 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-08-26 23:41:27 +00:00
parent eb150d7d1f
commit f48e83ded0
1 changed files with 3 additions and 2 deletions
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5
lib/Target/PowerPC/PPCBranchSelector.cpp
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@ -106,12 +106,13 @@ namespace {
int Displacement = OffsetMap[trueMBB] - ByteCount; int Displacement = OffsetMap[trueMBB] - ByteCount;
unsigned Opcode = MBBI->getOperand(1).getImmedValue(); unsigned Opcode = MBBI->getOperand(1).getImmedValue();
unsigned CRReg = MBBI->getOperand(0).getReg();
unsigned Inverted = PPC32InstrInfo::invertPPCBranchOpcode(Opcode); unsigned Inverted = PPC32InstrInfo::invertPPCBranchOpcode(Opcode);
if (Displacement >= -32768 && Displacement <= 32767) { if (Displacement >= -32768 && Displacement <= 32767) {
BuildMI(*MBB, MBBJ, Opcode, 2).addReg(PPC::CR0).addMBB(trueMBB); BuildMI(*MBB, MBBJ, Opcode, 2).addReg(CRReg).addMBB(trueMBB);
} else { } else {
BuildMI(*MBB, MBBJ, Inverted, 2).addReg(PPC::CR0).addSImm(8); BuildMI(*MBB, MBBJ, Inverted, 2).addReg(CRReg).addSImm(8);
BuildMI(*MBB, MBBJ, PPC::B, 1).addMBB(trueMBB); BuildMI(*MBB, MBBJ, PPC::B, 1).addMBB(trueMBB);
BuildMI(*MBB, MBBJ, PPC::B, 1).addMBB(falseMBB); BuildMI(*MBB, MBBJ, PPC::B, 1).addMBB(falseMBB);
} }